A new type of plastic needle syringe

Abstract

This utility model discloses a novel plastic needle syringe, comprising a hollow syringe made of medical-grade polypropylene. A push rod is located inside the syringe, and a plastic needle hub is located at one end of the syringe. The plastic needle hub is made of medical-grade polypropylene as its core material, and a needle is mounted inside the plastic needle hub. Through this structure, a needle cap is provided on the outside of the needle, maintaining its sterility and reducing the risk of contamination before use. The medical-grade polypropylene used in the plastic needle hub prevents the formation of leachables when in contact with medication and can withstand conventional sterilization processes, allowing it to directly enter conventional plastic recycling processes, reducing sorting costs. The threaded connection design between the syringe and the plastic needle hub ensures a secure seal. The threaded sealing structure of both the syringe and the needle hub relies on the easy molding of plastic, enabling mass production while simplifying assembly, thus balancing practicality and economy.

Description

Technical Field

[0001] This utility model relates to the field of needle syringe technology, and in particular to a novel plastic needle syringe. Background Technology

[0002] Syringes are an indispensable tool in the medical field, widely used in drug injection, blood collection and other operations. New plastic needle syringes are syringe systems made of plastic, designed to improve safety, convenience, patient experience, cost-effectiveness or environmental sustainability.

[0003] However, most existing syringes use metal needle hubs, which do not meet expectations in terms of practicality, economy, and environmental protection. Furthermore, the assembly at the syringe connection point is inconvenient, increasing the overall cost of discarding the syringe and the environmental pressure. Utility Model Content

[0004] The purpose of this invention is to at least solve one of the technical problems existing in the prior art, and to provide a new type of plastic needle syringe that can withstand conventional sterilization processes and can be directly used in conventional plastic recycling processes, thereby simplifying assembly operations and taking into account both practicality and economy.

[0005] This utility model also provides a novel plastic needle syringe, including a syringe barrel, which is hollow and made of medical-grade polypropylene. A push rod is provided inside the syringe barrel, and a plastic needle seat is provided at one end of the syringe barrel. The plastic needle seat is made of medical-grade polypropylene as the core material, and a needle is assembled inside the plastic needle seat.

[0006] According to the present invention, a novel plastic needle syringe has a push handle fixedly connected to one end of the push rod.

[0007] According to the present invention, a novel plastic needle syringe is provided with a threaded hole at the bottom of the syringe barrel, and a threaded post is provided on the outer side of the plastic needle seat, wherein the threaded hole and the threaded post are threadedly connected.

[0008] According to the present invention, a novel plastic needle syringe is provided with a pull handle at one end of the syringe barrel.

[0009] According to the present invention, a novel plastic needle syringe is provided with a needle cap on the outside of the needle. The needle cap is made of polyethylene and its inner wall is sterilized.

[0010] According to the present invention, a novel plastic needle syringe is provided with a piston at one end of the push rod, and a sealing ring is provided on the outer layer of the piston.

[0011] Beneficial effects:

[0012] 1. The needle cap is provided to maintain the sterility of the needle and reduce the risk of contamination before use. The plastic needle hub is made of medical-grade polypropylene, which prevents the formation of leaching products when in contact with medication and can withstand routine sterilization processes. It can be directly entered into the routine plastic recycling process, reducing sorting costs.

[0013] 2. The threaded connection design of the syringe and the plastic needle hub can achieve a firm seal between the two. The threaded sealing structure of both the syringe and the needle hub relies on the easy molding of plastic, which enables mass production and simplifies the assembly operation, taking into account both practicality and economy. Attached Figure Description

[0014] The present invention will be further described below with reference to the accompanying drawings and embodiments;

[0015] Figure 1 This is a perspective view of a novel plastic needle syringe according to the present invention;

[0016] Figure 2 This is a schematic diagram of the push rod structure of a novel plastic needle syringe according to this utility model;

[0017] Figure 3 This is a schematic diagram of the syringe barrel structure of a novel plastic needle syringe according to this utility model;

[0018] Figure 4 This is a diagram showing the needle structure of a novel plastic needle syringe according to this utility model;

[0019] Legend:

[0020] 1. Syringe; 2. Push rod; 3. Plastic needle hub; 4. Push handle; 5. Piston; 6. Threaded hole; 7. Pull handle; 8. Threaded post; 9. Needle; 10. Needle cap. Detailed Implementation

[0021] This section will describe in detail the specific embodiments of the present utility model. The preferred embodiments of the present utility model are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present utility model, but they should not be construed as limiting the scope of protection of the present utility model.

[0022] Reference Figure 1-4 This utility model provides a novel plastic needle syringe, which includes a syringe barrel 1. The syringe barrel 1 has a hollow structure and is made of medical-grade polypropylene. A push rod 2 is provided inside the syringe barrel 1, and a plastic needle seat 3 is provided at one end of the syringe barrel 1. The plastic needle seat 3 is made of medical-grade polypropylene as the core material, and a needle 9 is assembled inside the plastic needle seat 3.

[0023] Specifically, the syringe 1 is used as a storage container for the liquid medicine, the push rod 2 is used to manually push the piston 5 to provide power for pushing the liquid medicine, and the plastic needle holder 3 is used to fix the needle 9.

[0024] A push handle 4 is fixedly connected to one end of the push rod 2.

[0025] Specifically, the push handle 4 is used to provide a stable point of force for the hand to apply force.

[0026] The syringe 1 has a threaded hole 6 at the bottom and a threaded post 8 on the outside of the plastic needle holder 3. The threaded hole 6 and the threaded post 8 are threadedly connected.

[0027] Specifically, the threaded hole 6 and the threaded post 8 are used to achieve a firm fixation between the syringe 1 and the plastic needle holder 3 through threaded connection.

[0028] A pull handle 7 is provided at one end of the syringe 1.

[0029] Specifically, the pull handle 7 is designed to make it easier for staff to hold the syringe.

[0030] A needle cap 10 is provided on the outside of the needle 9. The needle cap 10 is made of polyethylene and its inner wall is sterilized.

[0031] Specifically, the needle cap 10 is used to cover the needle 9 to prevent the tip of the needle 9 from being damaged by impact.

[0032] A piston 5 is provided at one end of the push rod 2, and a sealing ring is provided on the outer layer of the piston 5.

[0033] Specifically, piston 5 is used to fit tightly against the inner wall of syringe 1 to form a sealed space and prevent the medicine from leaking out.

[0034] Working principle: The syringe 1 is sealed and assembled with the threaded post 8 of the plastic needle holder 3 through the threaded hole 6. The needle tip 9 is wrapped with a needle cap 10 with a sterile protective film to ensure sterility. The push rod 2 drives the piston 5 with a sealing ring to the top of the syringe to form a sealed space. When drawing out the medicine, the needle cap 10 is removed and the needle tip 9 is inserted into the medicine. Pulling the push rod 2 creates a negative pressure in the syringe 1. The medicine is drawn in by the air pressure difference. When injecting, the syringe 1 is fixed by holding the pull handle 7. After puncture, the push handle 4 is pressed to push the push rod. The piston 5 squeezes the syringe 1 to create positive pressure, accurately injecting into the target site. The plastic needle holder 3 is made of medical-grade polypropylene, which is convenient for medical institutions to collect and include in the existing recycling network.

[0035] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.

Claims

1. A new plastic needle syringe comprising a barrel (1) characterized in that: The syringe (1) has a hollow structure and is made of medical-grade polypropylene. A push rod (2) is provided inside the syringe (1). A plastic needle seat (3) is provided at one end of the syringe (1). The plastic needle seat (3) is made of medical-grade polypropylene as the core material. A needle (9) is assembled inside the plastic needle seat (3).

2. A new plastic needle syringe as claimed in claim 1, wherein, One end of the push rod (2) is fixedly connected to the push handle (4).

3. A new plastic needle syringe as claimed in claim 1, wherein, The syringe (1) has a threaded hole (6) at the bottom and a threaded post (8) on the outside of the plastic needle holder (3). The threaded hole (6) is threadedly connected to the threaded post (8).

4. A new plastic needle syringe as claimed in claim 1, wherein, The syringe (1) is provided with a pull handle (7) at one end.

5. A new plastic needle syringe as claimed in claim 1, wherein, The needle (9) is provided with a needle cap (10) on the outside. The needle cap (10) is made of polyethylene and its inner wall is sterile.

6. A new plastic needle syringe as claimed in claim 1, wherein, A piston (5) is provided at one end of the push rod (2), and a sealing ring is provided on the outer layer of the piston (5).

Images